diff --git a/account_manager/views/group_views.py b/account_manager/views/group_views.py
index 68517fb..9565a22 100644
--- a/account_manager/views/group_views.py
+++ b/account_manager/views/group_views.py
@@ -44,7 +44,7 @@ def group_detail(request, realm_id, group_dn):
 @login_required
 @is_realm_admin
 def group_add(request, realm_id):
-    realm_obj = Realm.objects.get(id=realm_id)
+    realm = Realm.objects.get(id=realm_id)
     LdapUser.base_dn = LdapUser.ROOT_DN
     # if this is a POST request we need to process the form data
     if request.method == 'POST':
@@ -52,18 +52,19 @@ def group_add(request, realm_id):
         form = AddLDAPGroupForm(request.POST)
         # check whether it's valid:
         if form.is_valid():
-            name = form.cleaned_data['name']
+            name = form.cleaned_data["name"]
             members = form.cleaned_data['members']
             members = [member.dn for member in members]
-            LdapGroup.base_dn = f'ou=groups,{realm_obj.ldap_base_dn}'
+            LdapGroup.base_dn = f'ou=groups,{realm.ldap_base_dn}'
             LdapGroup.objects.create(name=name, members=members)
             return redirect('realm-group-list', realm_id)
-
+        elif 'members' not in form.cleaned_data:
+            return render(request, 'group/group_add.jinja2', {'form': form, 'realm': realm,
+                                                              'extra_error': 'Bitte wähle mindestens ein Mitglied aus. Falls kein Mitglied angezeigt wird, erstelle zuerst einen Nutzer'})
     # if a GET (or any other method) we'll create a blank form
     else:
         form = AddLDAPGroupForm()
-
-    return render(request, 'group/group_add.jinja2', {'form': form, 'realm': realm_obj})
+    return render(request, 'group/group_add.jinja2', {'form': form, 'realm': realm})
 
 
 @login_required
diff --git a/templates/group/group_add.jinja2 b/templates/group/group_add.jinja2
index e064a62..45f1964 100644
--- a/templates/group/group_add.jinja2
+++ b/templates/group/group_add.jinja2
@@ -2,6 +2,9 @@
 {% import 'macros/form_macros.jinja2' as mform %}
 
 {% block detail_content %}
+    {% if extra_error %}
+        <div class="alert alert-warning">{{ extra_error }}</div>
+    {% endif %}
     <form action="{{ url('realm-group-add', args=[realm.id]) }}" method="post">
         <input type="hidden" name="csrfmiddlewaretoken" value="{{ csrf_token }}">
         {{ mform.text_input(form.name) }}